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POAutomatically create TableView columns based on data class info
 

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  1. POAutomatically create TableView columns based on data class info
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    <p>I have this editable JavaFX table for editing data:</p> <pre><code>public class DataTable { public void initTable(Stage primaryStage, Group root, Scene scene) { tableView.setEditable(true); Callback&lt;TableColumn, TableCell&gt; cellFactory = new Callback&lt;TableColumn, TableCell&gt;() { @Override public TableCell call(TableColumn p) { return new EditingCell(); } }; TableColumn columnMonth = new TableColumn("Month"); columnMonth.setCellValueFactory( new PropertyValueFactory&lt;Record, String&gt;("fieldMonth")); TableColumn columnValue = new TableColumn("Value"); columnValue.setCellValueFactory( new PropertyValueFactory&lt;Record, Double&gt;("fieldValue")); //--- Add for Editable Cell of Value field, in Double columnValue.setCellFactory(cellFactory); columnValue.setOnEditCommit( new EventHandler&lt;TableColumn.CellEditEvent&lt;Record, Double&gt;&gt;() { @Override public void handle(TableColumn.CellEditEvent&lt;Record, Double&gt; t) { ((Record) t.getTableView().getItems().get( t.getTablePosition().getRow())).setFieldValue(t.getNewValue()); } }); //--- tableView.setItems(dataList); tableView.getColumns().addAll(columnMonth, columnValue); VBox vBox = new VBox(); vBox.setSpacing(10); vBox.getChildren().add(tableView); vBox.setLayoutX(410); vBox.setLayoutY(34); root.getChildren().add(vBox); } public class Record { private SimpleStringProperty fieldMonth; private SimpleDoubleProperty fieldValue; Record(String fMonth, double fValue) { this.fieldMonth = new SimpleStringProperty(fMonth); this.fieldValue = new SimpleDoubleProperty(fValue); } public String getFieldMonth() { return fieldMonth.get(); } public double getFieldValue() { return fieldValue.get(); } public void setFieldMonth(String fMonth) { fieldMonth.set(fMonth); } public void setFieldValue(Double fValue) { fieldValue.set(fValue); } } private TableView&lt;Record&gt; tableView = new TableView&lt;&gt;(); private ObservableList&lt;Record&gt; dataList = FXCollections.observableArrayList( new Record("January", 100), new Record("February", 200), new Record("March", 50), new Record("April", 75), new Record("May", 110), new Record("June", 300), new Record("July", 111), new Record("August", 30), new Record("September", 75), new Record("October", 55), new Record("November", 225), new Record("December", 99)); class EditingCell extends TableCell&lt;Record, Double&gt; { private TextField textField; public EditingCell() { } @Override public void startEdit() { super.startEdit(); if (textField == null) { createTextField(); } setGraphic(textField); setContentDisplay(ContentDisplay.GRAPHIC_ONLY); textField.selectAll(); } @Override public void cancelEdit() { super.cancelEdit(); setText(String.valueOf(getItem())); setContentDisplay(ContentDisplay.TEXT_ONLY); } @Override public void updateItem(Double item, boolean empty) { super.updateItem(item, empty); if (empty) { setText(null); setGraphic(null); } else { if (isEditing()) { if (textField != null) { textField.setText(getString()); } setGraphic(textField); setContentDisplay(ContentDisplay.GRAPHIC_ONLY); } else { setText(getString()); setContentDisplay(ContentDisplay.TEXT_ONLY); } } } private void createTextField() { textField = new TextField(getString()); textField.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2); textField.setOnKeyPressed(new EventHandler&lt;KeyEvent&gt;() { @Override public void handle(KeyEvent t) { if (t.getCode() == KeyCode.ENTER) { commitEdit(Double.parseDouble(textField.getText())); } else if (t.getCode() == KeyCode.ESCAPE) { cancelEdit(); } } }); } private String getString() { return getItem() == null ? "" : getItem().toString(); } } } </code></pre> <p>I have to create small program which can display data from database tables and edit the tables. I came to this problem when I click on a table I have to generate dynamic table view from JPA object, so I have every time one table but with different columns. Can I somehow generate every time table with the data from JPA and update columns automatically based on the case?</p>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USSergey Grinev
    1. USPeter Penzov
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. VO
      singulars
      1. POAutomatically create TableView columns based on data class info
      1. This table or related slice is empty.
      1. VTUpMod
    1. COyou want to resize the table columns ?
      singulars
      1. POAutomatically create TableView columns based on data class info
      1. UStarrsalah
    2. COI want to change the number of the columns based of the number of Java object attributes.
      singulars
      1. POAutomatically create TableView columns based on data class info
      1. USPeter Penzov
    3. COyou need to study the [java reflection API](http://docs.oracle.com/javase/tutorial/reflect/).
      singulars
      1. POAutomatically create TableView columns based on data class info
      1. UStarrsalah
 

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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